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Comodo Email Digital Signature
COMODOEmail ValidationIssued in n/a

Comodo Email Digital Signature

Best Certificate To Sign Your E-Mail Messages On Any Mail Client

4.47 out of 5·16 customer reviews·Sold and supported by SSL Retail
  • Lowest price guarantee — find it cheaper and we match it. Claim it
  • 24×7 support from real engineers — not a ticket queue. Contact us
  • No paperwork, no documents — prove the domain is yours and you are done.

What you get

  • Digital SignatureIncluded
  • Mobile FriendlyIncluded
  • ValidationEmail Validation
  • Issued in n/aYour order reaches the certificate authority the moment payment clears.
  • Real people, 24×7Engineers who install certificates every day. Ask a question
  • Lowest price guarantee
  • 24×7 support
Choose your term
1 Year $24.99 Best value 2 Years $37.99 $19 / year
$24.99
1 Year
Add to your order
  • Help from real engineers, 24×7 — before you order as well as after.
Encrypted checkout on sslretail.com
Comodo email signature certificate can digitally sign your emails as well as documents. Comodo digital signature encrypt confidential emails so that unauthorized persons can not read it. This certificate can be installed in most of email clients line Outlook, Thunderbird, Windows Mail, Netscape Communicator, Qualcomm Eudora, Lotus Notes etc.

How it works

  1. Order and payPick your term, add your details, check out.
  2. Identity verificationThe certificate authority confirms who you are. We tell you exactly what to send and chase the CA on your behalf.
  3. Collect and start signingTypically issued in n/a. We stay with you until it is working.

What customers say

4.47 out of 5Read all 16 reviews →
  • G
    Giulia RossiVerified buyer · June 20, 2026

    Prompt and professional

    Needed a signing certificate for filing documents and this was straightforward to obtain. The certificate details match our registered particulars exactly. Have moved the rest of our certificates over to them since.

  • F
    Felix HoffmannVerified buyer · May 10, 2026

    Good value

    The verification steps were explained clearly, which is not always the case. Renewal was simpler than the first issue, as expected. Renewal reminder arrived well before expiry, which I appreciated.

  • S
    Sander SmitVerified buyer · January 12, 2026

    Painless renewal

    Filed our returns with this signature and the portal accepted it first time. The token drivers installed without a fight on Windows 11. Support answered on the first try, at an hour I did not expect anyone to be awake.

  • A
    Amara AchiengVerified buyer · December 27, 2025

    Better than our last provider

    The video verification step took ten minutes and the certificate followed the same day. The token arrived quickly and was ready to use. No complaints at all. Straightforward transaction.

Ready to secure your site?

Comodo Email Digital Signature — ordered in a minute, with people on the other end if anything needs a hand.

  • Issued in n/a
  • Lowest price guarantee
  • 24×7 support
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    Pick your server at checkout and one of our engineers installs the certificate, checks the chain and confirms the padlock. No test runs on your production box.

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